4) Be suspicious of commercial encryption software, especially from large vendors. My guess is that most encryption products from large US companies have NSA-friendly back doors, and many foreign ones probably do as well. It’s prudent to assume that foreign products also have foreign-installed backdoors. Closed-source software is easier for the NSA to backdoor than open-source software. Systems relying on master secrets are vulnerable to the NSA, through either legal or more clandestine means.
It’s pretty sad that we have to even consider measures like this. We are truly living in Orwell’s 1984. I’m so angry and completely fed up with my government. In the words of Michael Dell, I think we ought to shut it down and give the money back to the shareholders.